Wednesday, November 30, 2011

Three handout were given out. Read and highlight the important sections and then color the images so that each structure named and pictured has a different color. If you can use the color for structures that appear on the different images i.e. light green for nuclear membrane on all pictures, that can give you a little e.c.

If you are missing any book readings, read and take notes on ANY of the book assignments and turn them in by friday 12/2/11 for partial (55%) credit.
assignments include : ch 2.1 ; ch 2.2; ch 2.3; ch 1.1 + 1.2; Ch 1.3 & 924-930; SkHbk 931-938 ; ch 3.1 ; ch 3.2 + 3.3

Tuesday, November 22, 2011

Do the "problem-solving lab " on pg 63 of Earth science text. use the following critical thinking questions instead of the ones in the book . All answer should be in complete sentences , where it applies! Happy thanksgiving!!!

You are to look at the internal structure and function of a cell and create an illustrated diagram, t-chart, web page, power point, story or other teacher approved project format that compares the cell and its’ organelles to an analogous system such as a school, a car, a factory or whatever; each of which have important smaller parts with important functions.

Your project needs to include each organelle listed below and its role in the cell and it will need an analogous system to the cell and each organelle. Make sure you compare and explain the roles of each organelle and their analogous counterparts.

Ex: Cell = School, where the nucleus, which controls all cell functions, could be compared to the principal in the school.If you use this example I will not give you higher than a 3 on #3 of the rubric.

Use the text book, Internet, notes and your brains

Grading (subjective rubric = score of 5-0 points based on my feelings about the quality and evident effort on the project and its’ parts)

Convert the posted mass from oz → g using the following formula 1oz. = 28.3 g

Take the mass measurement of the rubber stopper on the metric balance.

Do this for four different rubber stoppers with different posted masses (each table member should do all parts of the experiment for at least one sinker)

Subtract the measured mass in grams from the posted mass in grams to determine the relative error.You may disregard any negative numbers9 take an absolute value of your result).

Take the relative error in grams and divide by the converted posted mass, in grams, and multiply by 100 to determine the percent error.

Data:

Rubber stopper #

Posted mass

Converted (g)

Measured mass

(g)

Relative Error

% error

Observations:

Analysis:include your calculations and math work for doing the oz-g conversions, relative and percent error.

Make a Bar graph of actual versus converted mass values of the rubber stoppers used.

Conclusion: (restate the hypothesis, explain how you answered the question or not and compare numeric results to prove or refute your hypothesis, discuss observations as possible errors and propose a next step and who outside of this science class might care about your results)

We have started our DNA/PCR multiday lab. We will be doing strenuous lab activities over the next 3-4 periods and then a Final lab write up of the activity will be due Friday Nov. 18th.: Most activities will be done in the lab so there will be very little homework until the final write up , worth 1000 points, is due friday, 11/18/2011!!